rc.lua: Switch from `awful.rules` to `ruled.client`.

It's the same module, but with a new name. The commit also switches
from the "one off" rule write to the incremental and signal based one.

This allows modules to add their own rules without having a race
condition against `rc.lua` and other modules. Previously, if a module
wasn't designed to prevent it, rules got destroyed each time.

awesomerc.lua

@@ -13,6 +13,8 @@ local wibox = require("wibox")
 local beautiful = require("beautiful")
 -- Notification library
 local naughty = require("naughty")
+-- Declarative object management
+local ruled = require("ruled")
 local menubar = require("menubar")
 local hotkeys_popup = require("awful.hotkeys_popup")
 -- Enable hotkeys help widget for VIM and other apps
@@ -439,37 +441,30 @@ end)
 -- {{{ Rules
 -- Rules to apply to new clients.
 -- @DOC_RULES@
-awful.rules.rules = {
+ruled.client.connect_signal("request::rules", function()
     -- @DOC_GLOBAL_RULE@
     -- All clients will match this rule.
-    { rule = { },
+    ruled.client.append_rule {
-      properties = { focus = awful.client.focus.filter,
+        id         = "global",
+        rule       = { },
+        properties = {
+            focus     = awful.client.focus.filter,
             raise     = true,
             screen    = awful.screen.preferred,
             placement = awful.placement.no_overlap+awful.placement.no_offscreen
         }
-    },
+    }
 
     -- @DOC_FLOATING_RULE@
     -- Floating clients.
-    { rule_any = {
+    ruled.client.append_rule {
-        instance = {
+        id       = "floating",
-          "DTA",  -- Firefox addon DownThemAll.
+        rule_any = {
-          "copyq",  -- Includes session name in class.
+            instance = { "copyq", "pinentry" },
-          "pinentry",
-        },
             class    = {
-          "Arandr",
+                "Arandr", "Blueman-manager", "Gpick", "Kruler", "Sxiv",
-          "Blueman-manager",
+                "Tor Browser", "Wpa_gui", "veromix", "xtightvncviewer"
-          "Gpick",
+            },
-          "Kruler",
-          "MessageWin",  -- kalarm.
-          "Sxiv",
-          "Tor Browser", -- Needs a fixed window size to avoid fingerprinting by screen size.
-          "Wpa_gui",
-          "veromix",
-          "xtightvncviewer"},
-
             -- Note that the name property shown in xprop might be set slightly after creation of the client
             -- and the name shown there might not match defined rules here.
             name    = {
@@ -480,19 +475,26 @@ awful.rules.rules = {
                 "ConfigManager",  -- Thunderbird's about:config.
                 "pop-up",         -- e.g. Google Chrome's (detached) Developer Tools.
             }
-      }, properties = { floating = true }},
+        },
+        properties = { floating = true }
+    }
 
     -- @DOC_DIALOG_RULE@
     -- Add titlebars to normal clients and dialogs
-    { rule_any = {type = { "normal", "dialog" }
+    ruled.client.append_rule {
         -- @DOC_CSD_TITLEBARS@
-      }, properties = { titlebars_enabled = true }
+        id         = "titlebars",
-    },
+        rule_any   = { type = { "normal", "dialog" } },
+        properties = { titlebars_enabled = true      }
+    }
 
     -- Set Firefox to always map on the tag named "2" on screen 1.
-    -- { rule = { class = "Firefox" },
+    -- ruled.tag.append_rule {
-    --   properties = { screen = 1, tag = "2" } },
+    --     rule       = { class = "Firefox"     },
-}
+    --     properties = { screen = 1, tag = "2" }
+    -- }
+end)
+
 -- }}}
 
 -- {{{ Titlebars